package com.zhaojun.cloud.common.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


@Component("springUtils")
public class SpringUtils implements ApplicationContextAware {

	private static transient Logger logger = LoggerFactory.getLogger(SpringUtils.class);

	private static ApplicationContext applicationContext = null;

	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		logger.info(this.getClass().getName() + ".setApplicationContext(), applicationContext = " + applicationContext);
		if (SpringUtils.applicationContext == null) {
			SpringUtils.applicationContext = applicationContext;
		}
	}

	public static ApplicationContext getApplicationContext() {
		return applicationContext;
	}

	public static boolean containsBean(String name) {
		return getApplicationContext().containsBean(name);
	}

	public static Object getBean(String name) {
		return getApplicationContext().getBean(name);

	}

	public static <T> T getBean(Class<T> clazz) {
		return getApplicationContext().getBean(clazz);
	}

	public static <T> T getBean(String name, Class<T> clazz) {
		return getApplicationContext().getBean(name, clazz);
	}

}
